31801360

素因数分解:

$2^4\times 5^1\times {\mathrm{397517}}^1$

素因数の和:397530

約数の個数: 20

約数和(自身を含む): 73938348

約数和(自身を除く): 42136988

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397517, 795034, 1590068, 1987585, 3180136, 3975170, 6360272, 7950340, 15900680, 31801360]

約数ペア:

[(1, 31801360), (2, 15900680), (4, 7950340), (5, 6360272), (8, 3975170), (10, 3180136), (16, 1987585), (20, 1590068), (40, 795034), (80, 397517)]